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The OPTICON-Radionet Pilot Trans-National Access programme will continue and hopefully lead to even greater integration and coordination of the participating telescopes. At present the proposals for  time at all the optical telescopes in  the network  are being reviewed together by a single international Time Allocation Committee (TAC) to ensure network-wide competition and uniform review criteria. In due course multi messenger proposals involving radio telescopes which formed part of Radionet will be invited. Purely radio proposals are solicited via a different mechanism described on the following page:

RADIO Telescope Transnational Access

The network comprises 14 distinct telescopes in a size range from 0.6 to 10 metres. These offer a mixture of classically scheduled PI projects, some queue scheduled observing where this is a normal operational mode of the telescope in question and a number of robotic telescopes well suited to both monitoring and quick reaction alert type observations.


The process is open to all EU astronomers, and to non-EU astronomers if certain conditions are met, provided that they do not have automatic access to the facilities via national mechanisms. Proposals are ranked on scientific merit but special consideration is given to proposers who have no suitable national facilities which they can use.
There are two calls for proposals each year. The calls generally open at the start of February and August...

The Coordinator for the OPTICAL Telescope Transnational Access is John K. Davies (STFC) -

Current Call

The 2022A call for observing time at OPTICAL telescopes is now open:

2022A Optical Telescope Call

This call will close on 31 August 2021 at 23.59UT exactly.